Airtight metal pipes across inner spaces of non-Styrofoam, non-Plastic inner frame of refrigerators

ABSTRACT

In all freezers and refrigerators all have integral plastic inner frame and the refrigerator door mezzanine both are filled with injection-type Styrofoam to keep cold. The plastic inner frames and Styrofoam are both environmentally unfriendly and difficult to recycle and wasteful a lot of energy.

TECHNICAL FIELD

This new model relates to field that injecting the Styrofoam into the plastic frame between the metal frames to make thermal insulation freezers and refrigerators.

PREVIOUS TECHNOLOGY

All freezers and refrigerators manufactured around the world have a metal shell with PVC plastic integrally injected into the five-sided inner frame and the refrigerator door inner space are filled with injection-type Styrofoam to keep cold. The plastic inner frame and foam plastic is both environmentally unfriendly and difficult to recycle.

UTILITY PATENT CONTENT

The innovative purpose of the new model is to use the metal frame interlayer of the refrigerator and the built-in vacuum airtight inner space of the refrigerator metal door. This innovation can eliminate the need to inject Styrofoam into the PVC plastic inner frame of the refrigerator for thermal insulation. It able to stainless steel fresh-keeping transportation inner and outer boxes and double-layer cover plates to replace the Styrofoam fresh-keeping cooler avoiding the environmental damage of Styrofoam which can't be recycled.

A SIMPLE DESCRIPTION OF SCHEMA

FIG. 1 is a schematic drawing of this invention applied to non-Styrofoam, non-Plastic inner frame of refrigerators.

APPLICATION METHOD

A single-door refrigerator is shown in FIG. 1 . The outer door panel 10 and the inner door panel 102 of the refrigerator are air tightly welded with a 1 cm non-contact airtight inner space 101. The five-sided outer metal box frame 11 includes the back and the two sides on the left and right sides. There must be a 2 cm non-contact metal inner space 12 between the inner metal box frames 13. There are 5 metal pipes 121˜125 specially designed to penetrate through the outer metal frame 11 and the inner metal frame 13 of the refrigerator with ten holes reserved on the panels. The purpose is to connect the compressor refrigerant refrigeration function outside the refrigerator with the refrigeration function inside the refrigerator. Note that the metal pipes 121˜125 must be shown in FIG. 1 , and the outer metal box frame 11 and the inner metal box frame 13 must be pre-installed on both ends of the plate. The remaining ten holes are air tightly welded on both sides to achieve a metal pipe 121 for the liquid refrigerant to pass through the compressor 14 through the inner space 12 keep airtight to connect to the condenser 15, and the metal pipe 122 for the refrigerant for gasification to pass through the condenser 15. The airtight inner space 12 is connected to the radiator 16. The metal pipe 123 is for gasification and pressurization of the refrigerant from the radiator 16 through the airtight inner space 12 and returns to the compressor 14. The metal pipe 124 is for the light source power line and the sensing thermostat 17 the pipelines are connected by the airtight inner space 12 in the refrigerator to the external frequency conversion power control box 171 of the refrigerator. The metal pipe 125 drains the dripping water from the condenser 15 in the refrigerator through the internal water canister 151 through the airtight inner space 12 to the refrigerator outer evaporation tray 152. Note that when each metal pipe penetrates the space of the airtight inner of 12, the metal pipe body must non-contact the panel's surface of the outer metal box frame 11 and the wall surface of the inner metal box frame 13. The two exhaust valves 20 are welded together separately to draw the airtight space into vacuum. The bottom of the refrigerator door 102 and the bottom of the inner metal box frame 11, the outer metal box frame 11 and the inner metal box frame 13 should be air-tightly welded around the front 126 position to form 12 with 2 cm that does non-touch the airtight space, and then the door frame rubber bead 103, which is exactly the same size as the refrigerator door, is placed at a predetermined position around the inner door 102 of the refrigerator. Finally, the top metal cover 18 of the radiator 16 is fixed at the predetermined position on the upper part of the outer metal box frame 11. The above all-metal products used the vacuum insulation and a cold insulation vertical single-door refrigerator is completed. Multiple metal partition spaces are able built in the metal box 13 of the same refrigerator, and the multi-temperature zone vertical multi-door refrigerator and freezer can be designed and made with no more have PVC plastic inner frame and no-environmentally hazardous Styrofoam.

SYMBOL DESCRIPTION

-   -   10 A front panel of single door refrigerator.     -   101 No-touch mezzanine inner of the refrigerator door.     -   102 A door rear panel of single door refrigerator.     -   103 The rubber bead on refrigerator door rear frame.     -   11 Five-sided external metal frame of refrigerator.     -   12 No-touch inner space between the inside and outside metal         frame of the refrigerator.     -   121 The refrigerant passes from the compressor 14 through the         metal pipe connecting the airtight inner space 12 and the         evaporator 15.     -   122 The vaporized refrigerant passes from the condenser 15 and         metal pipe connecting the airtight inner space 12 and the         radiator 16.     -   123 The pressurized refrigerant passes through the airtight         inner space 12 from the radiator 86 and returns through the         metal pipe to the compressor 84.     -   124 The light power cord and sensing are passed through the         metal pipe connecting the airtight inner space 12 and the         external variable frequency power control box 171 of the         refrigerator by the controller 17 in the refrigerator.     -   125 The dripping water from the condenser 15 in the refrigerator         flows through the inner holding tank 151 to draw the ice water         through the airtight inner space 12 to the drip evaporation tray         152.     -   126 The refrigerator outer metal frame 11 and inner metal frame         13 are welded around the front side.     -   13 Five-sided external metal frame of refrigerator.     -   14 The compressor.     -   15 The condenser.     -   151 Holding drip water in the refrigerator.     -   152 Drip evaporation tray.     -   16 The radiator.     -   17 A light and sensor of frequency conversion of controller.     -   171 A power supply box for frequency conversion.     -   18 Metal cover for top radiator of 16.     -   20 Exhaust valves. 

1. A process for manufacturing an airtight metal pipes across inner spaces of non-Styrofoam, non-Plastic inner frame of refrigerators having the following characteristics: Between the metal door frames (10) of the refrigerator/freezer and the metal inner door penal (102), there is an airtight inner space (101) built in; The metal box frame and cover lid for fresh cooling/warm preservation and transportation, having an airtight inner spaces; The metal box frame (13) without door of the five-sided refrigerator-freezer is placed in the larger five-sided outer metal box frame (11). Between the two five-sided inner and outer box frames, there are metal pipes (121˜125) that keep out of contact with the metal frame wall and penetrate the inner and outer boxes and frames across an airtight inner spaces (12); The refrigerant passes through the metal pipe, and its length is the same as the connection distance between parts. It is air tightly welded between the holes passing through the metal outer frame wall of the refrigerator and freezer and the corresponding hole of the metal inner frame wall. Wherein the refrigerant of the compressor (14) is transported through the metal pipe to the condenser (15) element, to the radiator (16), which returns to the compressor (15) to complete the cycle through the metal pipe line of (121,122,123); The temperature controller and frequency conversion circuit (17), the control light source circuit to the control box (171) are pass through the metal pipe (124), and the inner dripping water (151) are led to the bottom evaporation tray (152) by pipe (125), which are air tightly welded of the inner spaces that is penetrated and traversed; The freezer zone and the multiple refrigeration zones that the said refrigerant passing through the metal pipes are included, and the airtight inner spaces are built in; The above mentioned airtight inner spaces in the refrigerators/freezers with heat insulation are air tightly welded to an exhaust valve (20). 